** Shares of China Mengniu Dairy 2319.HK climb 6.2% to HK$16.88, set for the biggest one-day pct gain since March 6
** Stock touches the highest point since March 18; top pct gainer in benchmark Hang Seng Index .HSI, which is down 1.5%
** Chinese dairy products maker and distributor said its 2025 net profit jumped to 1.55 bln yuan ($224.47 mln) from 104.5 mln yuan in 2024, while revenue fell 7.3% y/y to 82.24 bln yuan
** Citi maintains "buy" rating on the stock, saying 2025 net profit was above expectations
** YTD, stock up 11.9%
($1 = 6.9053 Chinese yuan renminbi)
(Reporting by Donny Kwok)
((donny.kwok@thomsonreuters.com))